Oh, I get it now. That is an important test. It
looks like if you had made maybe a 1/50 version,
it would be indistinguishable from the original.
Or if you had used a slightly shorter focal
length, the amount of information would not have
been reduced. Or if you had used a sensor with
only 25-50% of the resolution, there would be no
loss of information. Or if you had used the
original sensor at a lower resolution setting
which eliminates the need for Bayer interpolation,
the image would be even better than the original.
There is much to learn about maximizing
information in gigapans.

I was trying to make a point that 250G image does
provide more information than a 2.5G thumbnail. I
created a panorama of 250G pixels from 12,000
images. Since the file is too big, I tried to
upload it to Gigapan 4 times and all failed.
Instead, I uploaded a 1/100 thumbnail at www.gigapan.org/gigapans/60510/
.